Why is reading lines from stdin much slower in C++ than Python?
I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misunderstanding something. (TLDR answer: include the statement: cin.sync_with_stdio(false) or just use
Why computers have two floating point zeros: +0 and -0
Here’s a strange detail of IEEE floating point arithmetic: computers have two versions of 0: positive zero and negative zero. Most of the time the distinction between +0 and −0 doesn’t matter, but once in a while signed versions of zero come in handy. If a positive quantity underflows to zero, it becomes +0. And if a negative quantity underflows to zero, it becomes −0. You could think of +0 (respe
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